Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
skip to main content
article
Free access

Globally convergent polynomial iterative zero-finding using APL

Published: 15 July 1992 Publication History

Abstract

We report the APL study of a global iteration theory for polynomial zero-finding, with the potential to converge from almost any point in the complex plane, as distinguished from classical, “neighborhood” theory requiring the starting guess to be close to the zero being sought. The iteration functions studied involve the function and its first two derivatives, evaluated at the guess Zk.
Using the symmetric cluster as a reference, we discovered Newton's method to be unsuitable, and the multiplicity-adjusted Laguerre formula deficient. But a new formula converges to symetric cluster zeros in just one iteration excepting for roundoff error, possesses cubic neighborhood convergence, and appears reliable for general polynomials. Roundoff errors are reduced through reasonable starting guesses. Reboundingby subclusters, a major cause of nonconvergence is resolved by a local polynomial approach. Most polynomials tested converge within a dozen iterations.

References

[1]
Kendall E. Atkinson, An Introduction to Numerical Analysis, Wiley (New York 1978). P. 87.
[2]
Tien Chi Chen, "Global convergence to zeros in the presence of clusters," Proc. Inter-national __~_m_~., Taipei, Taiwan, pp. 270-276, 1988.
[3]
Tien Chi Chen, "Iterative zero-finding revisited," pp. 583-590 in W.L. Hogarth and B.J. Noye (Eds.), Computational Techniques and Ap- plications: CTAC-89 (Proc. Computational Techniques and Applications Conference, Brisbane, Australia, July 1989), Hemisphere Pub. Corp. (New York 1990).
[4]
E. Hansen and M. Patrick, "Estimating the multiplicity of a root," Numerische Math., vol. 27, pp. 121-131 (1976).
[5]
E. Hansen and M. Patrick, "A family of root finding methods," Numerische Math., vol. 27, pp. 257-269 (1977).
[6]
A. Ralston and P. Rabinowitz, A First Course in Numerical Analysis, 2nd. Ed., McGraw-Hill (New York 1978). Pp.391, 395.

Cited By

View all

Recommendations

Comments

Information & Contributors

Information

Published In

cover image ACM SIGAPL APL Quote Quad
ACM SIGAPL APL Quote Quad  Volume 23, Issue 1
July 1992
309 pages
ISSN:0163-6006
DOI:10.1145/144052
Issue’s Table of Contents
  • cover image ACM Conferences
    APL '92: Proceedings of the international conference on APL
    July 1992
    326 pages
    ISBN:0897914775
    DOI:10.1145/144045

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 15 July 1992
Published in SIGAPL Volume 23, Issue 1

Check for updates

Qualifiers

  • Article

Contributors

Other Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

  • Downloads (Last 12 months)36
  • Downloads (Last 6 weeks)10
Reflects downloads up to 09 Nov 2024

Other Metrics

Citations

Cited By

View all
  • (2007)Newton's and Related MethodsNumerical Methods for Roots of Polynomials, Part I10.1016/S1570-579X(07)80008-5(131-206)Online publication date: 2007
  • (1994)Aberth's method for the parallel iterative finding of polynomial zerosACM SIGAPL APL Quote Quad10.1145/190468.19028125:1(40-49)Online publication date: 1-Aug-1994
  • (1994)Aberth's method for the parallel iterative finding of polynomial zerosProceedings of the international conference on APL : the language and its applications: the language and its applications10.1145/190271.190281(40-49)Online publication date: 1-Aug-1994
  • (1993)SCARFS, an efficient polynomial zero-finder systemACM SIGAPL APL Quote Quad10.1145/166198.16620424:1(47-54)Online publication date: 1-Sep-1993
  • (1993)SCARFS, an efficient polynomial zero-finder systemProceedings of the international conference on APL10.1145/166197.166204(47-54)Online publication date: 1-Sep-1993

View Options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Get Access

Login options

Media

Figures

Other

Tables

Share

Share

Share this Publication link

Share on social media